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Editing v0.34:Double-slit method
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{{quality|Masterwork|02:30, 16 June 2012 (UTC)}} | {{quality|Masterwork|02:30, 16 June 2012 (UTC)}} | ||
− | [[File:Double-slit-name.png|frame|right|The two | + | [[File:Double-slit-name.png|frame|right|The two name-giving slits are highlighted]] |
− | + | ||
+ | QuantumMenace has developed a very easy method how to dig through an [[DF2012:Aquifer|aquifer]] of unknown depth commonly known as the '''double-slit method'''. Its name derives from two channeled-out slits at the sides of a 2×2 area. | ||
The slits are used to break into the aquifer layer below, hence their ramps are flooded (blue). Water can be pumped from one slit to another slightly faster than the aquifer is flooding it. While a dwarf operates the pump, another dwarf can access the source slit via the ramp and seal off the surrounding walls of the aquifer one by one. | The slits are used to break into the aquifer layer below, hence their ramps are flooded (blue). Water can be pumped from one slit to another slightly faster than the aquifer is flooding it. While a dwarf operates the pump, another dwarf can access the source slit via the ramp and seal off the surrounding walls of the aquifer one by one. | ||
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=== Draining across multiple z-levels === | === Draining across multiple z-levels === | ||
− | + | QuantumMenace's double slit method uses this kind of aquifer draining for all but the lowest aquifer level. Once one of the lower aquifer levels has been cracked open, it can absorb all of the water being produced by the aquifer level above it. | |
{|class="wikitable1" | {|class="wikitable1" | ||
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== Tutorial embark setup == | == Tutorial embark setup == | ||
− | The double-slit method will be presented in a form of a play-along tutorial. | + | The double-slit method will be presented in a form of a play-along tutorial. Train it on an embark which you don't intend to play after you've made it through the aquifer. Try to embark at some forested place near the ocean where multi-level aquifers are almost guaranteed. Take this embark setup: |
* 1 Proficient Miner | * 1 Proficient Miner | ||
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You can sell the anvil, one pick, and all quivers, splints and crutches to buy loads of wooden logs. It will save you time cutting down trees. | You can sell the anvil, one pick, and all quivers, splints and crutches to buy loads of wooden logs. It will save you time cutting down trees. | ||
− | Make sure you have at least two battle axes and one pick to cut down trees and mine. | + | Make sure you have at least two battle axes and one 1 pick to cut down trees and mine. |
== Procedure == | == Procedure == | ||
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Using your logs of wood, build a carpenter's workshop and craft all the parts necessary to build a pump, i.e.: | Using your logs of wood, build a carpenter's workshop and craft all the parts necessary to build a pump, i.e.: | ||
− | * a [[block]]<br /> | + | * a [[DF2012:Block|block]]<br /> |
* an [[Trap_components#Enormous_corkscrew|enormous corkscrew]] | * an [[Trap_components#Enormous_corkscrew|enormous corkscrew]] | ||
− | * a [[pipe section]] | + | * a [[DF2012:Pipe section|pipe section]] |
=== Find out what you are dealing with === | === Find out what you are dealing with === | ||
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|} | |} | ||
− | Unfortunately, this pump won't work if there | + | Unfortunately, this pump won't work if there is stairs in its source tile. |
{|class="wikitable1" | {|class="wikitable1" | ||
|-valign="top" | |-valign="top" | ||
− | | [[Image:Aq10.png|frame|left|Remove the downstairs from the source | + | | [[Image:Aq10.png|frame|left|Remove the downstairs from the source file (channel it out).]] |
| [[Image:Aq11.png|frame|left|Start pumping.]] | | [[Image:Aq11.png|frame|left|Start pumping.]] | ||
|-valign="top" | |-valign="top" | ||
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|} | |} | ||
− | Here, too, you should {{K|.}} One-Step to peek under the second layer of your aquifer to know what you will have to deal with further below. Once the up/down stairs are dug, disassemble the pump, turn it to the other direction and dig more | + | Here, too, you should {{K|.}} One-Step to peek under the second layer of your aquifer to know what you will have to deal with further below. Once the up/down stairs are dug, disassemble the pump, turn it to the other direction and dig more stair there. (Don't forget to channel out the downstairs in the pump's source tile.) You should end up with something like this: |
{|class="wikitable1" | {|class="wikitable1" | ||
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|-valign="top" | |-valign="top" | ||
| [[Image:Aq35.png|frame|left|Deconstruct the pump and the floor.]] | | [[Image:Aq35.png|frame|left|Deconstruct the pump and the floor.]] | ||
− | | [[Image:Aq36.png|frame|left|Construct up/down stairs to keep this level | + | | [[Image:Aq36.png|frame|left|Construct up/down stairs to keep this level acessible. Make sure they connect to other stairs in the level above.]] |
|-valign="top" | |-valign="top" | ||
| [[Image:Aq37.png|frame|left|Build floor instead of the other pair of stairs.]] | | [[Image:Aq37.png|frame|left|Build floor instead of the other pair of stairs.]] | ||
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|} | |} | ||
− | Theoretically, you could now take a shortcut and build a wall instead of the stairs in the south-western corner. Then you would be safe to make an up/down staircase instead of the ramp in the pump's source tile. This would grant you a 1×1 access under your aquifer. You could in turn find a sink for all aquifer levels (e.g. a lake in a cavern) and pierce through the aquifer from below, draining it across multiple z-levels and drill a hole of any size and shape into it. (See a | + | Theoretically, you could now take a shortcut and build a wall instead of the stairs in the south-western corner. Then you would be safe to make an up/down staircase instead of the ramp in the pump's source tile. This would grant you a 1×1 access under your aquifer. You could in turn find a sink for all aquifer levels (e.g. a lake in a cavern) and pierce through the aquifer from below, draining it across multiple z-levels and drill a hole of any size and shape into it. (See a youtube tutorial video about this in the [[#Links|link]] section.) |
However, you are only a few more steps away from a nice 2×2 stairway through the aquifer (easily extendable to 4×2), so you can as well proceed. It is safer, anyway: | However, you are only a few more steps away from a nice 2×2 stairway through the aquifer (easily extendable to 4×2), so you can as well proceed. It is safer, anyway: | ||
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|} | |} | ||
− | Congratulations to your 4×2 hole through the aquifer | + | Congratulations to your 4×2 hole through the aquifer. |
==Links== | ==Links== | ||
* [http://youtu.be/TXQH9dliFZE A good youtube tutorial] covering this method, taking the shortcut later and working the aquifer from below | * [http://youtu.be/TXQH9dliFZE A good youtube tutorial] covering this method, taking the shortcut later and working the aquifer from below | ||
* [http://www.bay12forums.com/smf/index.php?topic=79224.msg2060636#msg2060636 Quantum's original forum post] — QuantumMenace improved Hans Lemurson's pump method. | * [http://www.bay12forums.com/smf/index.php?topic=79224.msg2060636#msg2060636 Quantum's original forum post] — QuantumMenace improved Hans Lemurson's pump method. | ||
− | |||
− | + | [[Category:DF2012:Guides]] |